/*
 * @Author: czy
 * @Date: 2021-05-21 22:07:18
 * @LastEditTime: 2021-05-21 22:08:13
 */
#ifndef __LIBIO_H_
#define __LIBIO_H_

#define VGA 1
#define UART -1
#define VGA_UART 0

typedef struct
{
    int stream;
} FILE;
extern FILE *stdin;		    /* Standard input stream.  */
extern FILE *stdout;		/* Standard output stream.  */
extern FILE *stderr;		/* Standard error output stream.  */
extern FILE *vga;
extern FILE *uart;

#endif
